Oxacarbocyanine (C3)dye |
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| The chemical structure of Oxacarbocyanine (C3)dye is shown at the right. The absorption and fluorescence emission spectra are shown below. The structure, absorption, and fluorescence data were all obtained from the PhotochemCAD package by Jonathan Lindsey. This excellent program allows rapid comparison of spectra and enables one to do a variety of photochemically relevant calculations. |
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Absorption
This is a graph of the molar extinction coefficient of Oxacarbocyanine (C3)dye dissolved in ethanol. It was measured by R. A. Fuh on 6/21/95 [H. Du, R. A. Fuh, J. Li, A. Corkan, J. S. Lindsey, "PhotochemCAD: A computer-aided design and research tool in photochemistry," Photochemistry and Photobiology, 68, 141-142, 1998]. Oxacarbocyanine (C3)dye has a molar extinction coefficient of 149,000 M-1cm-1 at 485 nm [P. J. Sims, A. S. Waggoner, C.-H. Wang, and J. F. Hoffman, "Studies on the mechanism by which cyanine dyes measure membrane potential in red blood cells and phosphatidylcholine vesicles," Biochem., 13, 3315-3330, 1974]. The fluorescence yield also has been reported to be 0.04 [D. F. O'Brien, T. M. Kelly, and L. F. Costa, "Excited-state properties of some carbocyanine dyes and the energy-transfer mechanism of spectral sensitization," Photogr. Sci. Eng., 18, 76-84, 1974]. |
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Fluorescence
This is the fluorescence emission spectrum of Oxacarbocyanine (C3)dye dissolved in ethanol. The spectrum was taken by R. A. Fuh on 6/21/95 using an excitation wavelength of 450 nm [H. Du, R. A. Fuh, J. Li, A. Corkan, J. S. Lindsey, "PhotochemCAD: A computer-aided design and research tool in photochemistry," Photochemistry and Photobiology, 68, 141-142, 1998]. The quantum yield is 0.05 [A. Waggoner, R. DeBiasio, P. Conrad, G. R. Bright, L. Ernst, K. Ryan, M. Nederlof, and D. Taylor, "Multiple spectral parameter imaging," Methods in Cell Biology, 30, 449-478, 1989]. |
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